Copper Bioavailability and Metabolism 1989
DOI: 10.1007/978-1-4613-0537-8_7
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Inhibitors of Copper Bioutilization: Fiber, Lead, Phytate and Tannins

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Cited by 5 publications
(4 citation statements)
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“…Polyphenols, like phytate, form insoluble complexes with metal cations that inhibit intestinal absorption of nonheme iron [41], perhaps copper [42] and zinc [43], but not calcium [44] or manganese [45]. The active compounds are the galloyl group found in tannin and gallic acid [41].…”
Section: Noncompetitive Interactionsmentioning
confidence: 99%
“…Polyphenols, like phytate, form insoluble complexes with metal cations that inhibit intestinal absorption of nonheme iron [41], perhaps copper [42] and zinc [43], but not calcium [44] or manganese [45]. The active compounds are the galloyl group found in tannin and gallic acid [41].…”
Section: Noncompetitive Interactionsmentioning
confidence: 99%
“…Current literature suggests that there is controversy on whether or not the consumption of all flavonoids during pregnancy is safe or detrimental to developmental processes. Some of these reports come from observations of impaired fetal development (heart, genitourinary and limb anomalies), impaired absorption and metabolism of other nutrients, and persistent lasting effects such as increased risk of early onset of diseases (for example acute childhood leukemia) [23] , [24] , [25] , [26] , [27] , [28] , [29] , [30] , [31] , [32] . While the above studies supplemented diets with flavonoid-rich foods or flavonoid preparations, there have been few studies investigating the effects of the chronic consumption of specific flavonoids during pregnancy.…”
Section: Introductionmentioning
confidence: 99%
“…Bien que leur effet soit difficile à distinguer de celui des phytates, les fibres pourraient également constituer des chélatants des oligo-éléments, les rendant moins disponibles. Chez l'Homme, les pectines seraient sans effet sur la rétention de Cu alors que l'addition de cellulose entraînerait une diminution de la digestibilité apparente du Cu (Kies et Umoren 1989). Chez le porc en croissance, des taux élevés de fibres riches en hémicellulose ou en lignocellulose ne modifient pas de façon notable le bilan en oligo-éléments sur le long terme (Moore et Kornegay 1987).…”
Section: / Fibresunclassified
“…Pour des durées de bilan supérieures à 20 jours, la rétention de Cu n'est pas modifiée par l'addition de 15 % de son d'avoine, de 15 % de coque de soja ou de 20 % de farine de luzerne dans un aliment pour porcelets sevrés (Moore et al 1988) et de 50 % d'avoine (Ravindran et al 1984) ou de 10 à 20 % de son de blé (Newton et al 1983) dans un aliment pour porcs charcutiers. D'autres éléments organiques comme certains tanins, ligands potentiels pour le Cu, sont susceptibles d'en modifier la disponibilité (Kies et Umoren 1989).…”
Section: / Fibresunclassified